tm-u675_ff

TMTM--U675U675--011011 Troubleshooting Guide.Troubleshooting Guide.

Please use the following flowcharts to help you to diagnose what is wrong with your printer. When the flowcharts call for a product to be returned to PC-PoS, please contact PC-PoS before the unit is sent back. Some of the following flowcharts discuss changing the Dip switch settings so that they are appropriate for the intended application. If you are not fully conversant with doing this then either contact your local dealer or contact the PC-PoS technical support department nearest to you. These flowcharts are intended as a basic fault-finding guide only and we do not encourage any repair to the internal mechanisms or electronic components by non- PC-PoS technical staff as this will render the warranty invalid. If you have any questions regarding this matter then please contact PC-PoS.

The Basic Guide.

Start

Is the POWER LED lit?

Power On

Go to part 1.

No

Is the PAPER OUT

LED lit?

Yes

No

Is the ERROR LED lit?

Yes

Go to part 4.

Yes

Is the ERROR LED flashing?

Go to part 4. (See also at the end of

this guide)

Yes

No

No

Execute the self-test (See part 4for details on how to do this).

Is the self-test normal?

Is the printout normal?

Terminal sends print data

Go to part 7.

END

No

No

Yes

Yes

Is the paper roll not loaded or near roll end?

Load roll paper.

OK?

END

Yes

No No

Yes

Go to part 6.

Go to part 2.

Is Paper Loading Correctly?

Go to part 5.

Yes

No

Is the SLIP LED lit or Flashing?

Go to part 3.

Yes

No

Part 1. Power LED does not light.

Start

Is the power supply cable connected

properly?

Connect power supply cable properly. To make certain this is done, remove the connector completely and re-insert.

OK?

Is the Power supply OK? I.E has it been

tested on another device?

Connect supply to another known working printer and test it.

PSU OK?

Check Fuse in mains plug and check for damage to cable or connector. Re-test the Power Supply on

another unit before proceeding. If you had to change the fuse and start the main flow-chart again.

PSU OK?

Return unit to PC-PoS. Beyond Local Repair.

END

No

Yes

Yes

Yes

Yes

Yes

No

No

No

No

Part 2. Paper Out LED is lit.

No

Yes

Start

Turn the printer off for 30 seconds and then turn back

on again.

OK?

END

Yes

No

Is the cover closed correctly?

Close the cover correctly. The best way to do this is to open the cover and then closing it again fully making certain to feed the paper

properly.

OK?

END

Yes

No


END

Part 3. SLIP LED lit or flashing.

No

Yes

Start

Turn the printer off for 30 seconds and then turn back

on again.

OK?

END

Yes

No

Is the cover closed correctly?

Close the cover correctly. The best way to do this is to open the cover

and then closing it again fully.

OK?

END

Yes

No


END

Part 4. Error LED is Lit or Flashing.

Start

Are the connectors to the printer hooked up

correctly?

Hook up connectors correctly. The easiest way to do this is to remove the connectors, while the power is off,

and re-connect them.

OK?

END

Yes

No

Is the paper type selected correctly by

DIP switch?

Turn the printer power off and change the DIP switch settings to the proper setting for the type of paper being used. (See the end of this document for the

appropriate settings)

OK?

END

Yes

No

Has the printer recovered from

the error?

Reset the printer by switching it off for at least 30 seconds.

Wait for the print head temperature to drop if excessive.


END

No

No

Yes

Yes

Part 4. Paper is not Loading Correctly.

No

Yes

Start

Is paper jammed in the paper inlet path or anywhere

in the printer?

Remove the paper jam. The best way to do this is to take out ALL paper rolls from the printer and then clean the inside to make

certain that all debris is removed. Re-load paper when finished and re-test.

OK?

END

Yes

No


END

Part 6. Self-test is not normal.

The Self-Test. To initiate the self-test for the RECEIPT part of the printer, follow these instructions: 1. Make certain there is either a paper roll or a label roll inserted and loaded into the

printer before starting. 2. Turn off the printer using the power button. 3. Turn the printer on while keeping the FEED button depressed. The self-test

should now start and the information printed will give the status of the printer. 4. When the test print is complete, the following will be on the last line of print,

“Self-test printing, Please press FEED button.” The PAPER OUT LED flashes to indicate the standby condition.

5. Press the FEED button to continue the self-test or switch the printer off and then back on again to resume normal printing.

To initiate the self-test for the SLIP part of the printer, follow these instructions: 1. Turn off the printer using the power button. 2. Turn the printer on while keeping the RELEASE button depressed. The SLIP

LED should now be flashing. Insert a piece of paper into the slip printing area then printing will commence and the information printed will give the status of the printer.

3. When printing is complete, the SLIP LED will be flashing. To continue the self-test, insert more paper in the slip part of the printer or switch off and back on again to resume normal printing.

Part 6 cont. Self-test is not normal.

Start

Does the printer operate at all?

Is the cover closed properly?

Close cover properly.

OK?

END

Yes

No


Printing is carried out, but print quality is deficient or

paper feeding is not normal.

Is the Ink Ribbon installed correctly?

Does it have enough ink?

OK?

END

Yes

Install print ribbon correctly or change print ribbon for a new one.


No

No

No

Yes

Yes

Yes

No

Part 7A (Serial Version) Data from host is not printed normally.

Start

Set SW1 of DIP switch bank 1 to OFF.

Send data from host to printer.

Is “?” printed?

Are RS-232 interface parameters set to

identical values at host printer?

Make settings identical

OK?

END

Yes

No

Does interface cable match

specifications? Replace with a proper

cable

OK?

END

Yes No

Is the interface cable damaged or

broken? Replace interface

cable.

OK?

END

Yes No


Yes

Yes

Yes

Yes

No

No

No

No

Part 7B (Parallel Version) Data from host is not printed normally.

Start

Send data from host to printer.

Is “?” printed?

Are RS-232 interface parameters set to

identical values at host printer?

Make settings identical

OK?

END

Yes

No

Does interface cable match

specifications? Replace with a proper

cable

OK?

END

Yes No

Is the interface cable damaged or

broken? Replace interface

cable.

OK?

END

Yes No


Yes

Yes

Yes

Yes

No

No

No

No

DIP Switch Settings for the TM-U675-011

For the Serial interface model. TM-U675 DIP switch 1

SW-1 Function ON OFF 1 Data reception error Ignored Prints ‘?’ 2 Receive buffer capacity 45 bytes 4K bytes 3 Handshaking XON/ XOFF DTR/ DSR 4 Word Length 7 bits 8 bits 5 Parity check Enabled Disabled 6 Parity selection Even Odd 7 8

Transmission speed selection. See the table below.

Transnission Speed (BPS) SW 1-7 SW 1-8 2400 ON ON 4800 OFF ON 9600 ON OFF 19200 OFF OFF

TM-U675 switch 2 SW-2 Function ON OFF

1 Handshaking Operation (Busy Condition)

Receive Buffer Full Off-line or Receive buffer Full

2 Connection of Customer Display Connected Not Connected 3 Selects number of characters per line See Table Below. 4 TM-U375 Compatibility Compatible Not Compatible 5 6

For Internal Use Only. Not to be changed.

7 I/F Pin 6 reset signal Enabled Disabled 8 I/F Pin 25 reset signal Enabled Disabled

TM-U675 Characters Per Line SW 2-4 SW 2-3 Font Type/ Character

Dot Spacing Characters

Per Line Total Dots

5 x 9 / 2 Half dots 33 Columns OFF 7 x 9 / 3 Half dots 40 Columns

400 Half Dots

5 x 9 / 1 Half dots 35 Columns On ON

5 x 9 / 2 Half dots 42 Columns 385 Half Dots

Note: Do not change the DIP switch settings while the printer power is on. You may damage the printer.

DIP Switch Settings for the TM-U675-011

For the Parallel interface model. TM-U675P DIP switch 1

SW-1 Function ON OFF 1 Auto line feed Enabled Disabled 2 Receive buffer capacity 40 bytes 4K bytes 3 4 5 6 7 8

Reserved Fixed to OFF

TM-U675P DIP switch 2

SW-2 Function ON OFF 1 Handshaking (Busy Condition) Receive Buffer Full Off Line or Receive Buffer

Full 2 Internal Use (DO NOT CHANGE) Fixed to OFF 3 Characters per line See Table Below 4 TM-U375 Compatibility Compatible Not Compatible 5 6

Internal Use Fixed to OFF

7 Cannot Be Used (Only for serial interface model) Fixed to OFF

8 I/F pin 31 reset signal (DO NOT CHANGE SETTING)

Fixed to ON

TM-U675 Characters Per Line SW 2-4 SW 2-3 Font Type/ Character

Dot Spacing Characters

Per Line Total Dots

5 x 9 / 2 Half dots 33 Columns OFF

7 x 9 / 3 Half dots 40 Columns 400 Half Dots

5 x 9 / 1 Half dots 35 Columns On

ON 5 x 9 / 2 Half dots 42 Columns

385 Half Dots

Note: Do not change the DIP switch settings while the printer power is on. You may damage the printer.

ERROR LED Patterns for the TMthe TM--U375U375

Error Error Description Error LED Blinking Pattern

Go to part…

1) Head High Temperature Error or Paper Roll

Insertion Error

Print head temperature is too high or Roll paper is not set correctly in the paper path.

Main

2) Home Position Detection Error.

Home position could not be detected properly due to paper jam in carriage or

other problem.

4

3) Carriage Detection Error.

Carriage motor has gone out of step due to paper jam in carriage or other problem.

4

4) Cut Sheet Ejection Error.

Slip or validation paper is not ejected properly after

being advanced

3

5) Paper Roll Cover Open Paper Roll cover is open.

Main

5) Memory or Gate Array Read/ Write Error.

Read/ write check has failed.

Main

6) High Voltage Error. Power supply voltage is too

high.

1

7) Low Voltage Error. Power supply voltage is too

low.

1

8) CPU execution error. CPU is trying to execute an

invalid address.

Main

9) Over Current Error. Abnormally high current

flows to the mechanism drive solenoid.

Main

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